Asiodixa L. PAPP, 2006

Papp, L., Merz, B. & Földvári, M., 2006, DIPTERA OF THAILAND A summary of the families and genera with references to the species representations, Acta Zoologica Academiae Scientiarum Hungaricae 52 (2), No. 2, pp. 97-269 : 114-115

Asiodixa L. PAPP , gen. n.

( Figs 2–12, 124–125)

Type species: Asiodixa maculosa L. PAPP , sp. n.; other included species: A. pura L. PAPP , sp. n. Gender: feminine.

Very small dixids, wing length 2.0– 2.5 mm. Frons convex without any setae. Scape very short ventrally ( Fig. 4). Pedicel bulbous.

Flagellum very long, male first flagellomere with a ventromedial dilatation at about middle ( Figs 2,

4–5), other basal flagellomeres long cylindrical. Female first flagellomere long cylindrical. Apical flagellomeres ( Fig. 3) medium long, apex with medium long setae only. Palpus with 5 palpomeres, 3–5 rather long. Proboscis not particularly long.

Wing with long S-curved Rs section ( Figs 124–125).

Male genitalia basically more similar to those of Dixella , than to those of Dixa : gonocoxite with an apical medially directed process. Dorsal wall of gonocoxites with a long pair of cranially directed processes ( Figs 9–10). Phallus ( Figs 6, 12) long or very long, thread-like.

The presence of a long pair of dorsal cranially directed processes of gonocoxites (dorsally to phallus) is in direct connection with the existence of long filiform phallus. The Thaii Dixella spp. have those and also some of the Palaearctic Dixella spp. , e.g. D. filiformis (EDWARDS) , too. No such long phallus and dorsal processes found in any Dixa spp. By this feature and some other characteristics I believe that the new genus is closer to Dixella than to Dixa .

Scales: 0.1 mm for Figs 2–3, 0.2 mm for Fig. 4